How to judge a battery is not a rechargeable battery?
The battery indicates that there is a mark that indicates whether it can be charged. Rechargeable battery marked can be charged, non-rechargeable battery marked no charge.
This simple as long as the positive pole has two small empty is the rechargeable battery. Or with a multimeter in general charge the battery voltage is 1.2v.
Ordinary battery R6, alkaline battery LR6, nickel-metal hydride rechargeable battery NI-MH and indicate voltage 1.2V. Just see the NI-MH 1.2V words, is the rechargeable battery.